C++基础--STL基本通用函数操作集合-白红宇

C++基础--STL基本通用函数操作集合

阅读量：5963 次

发布时间：2019-06-19

本文共 3342 字，大约阅读时间需要 11 分钟。

// TimerTest.cpp : Using STL functions//并集，交集，差集，根据bound获取特定子集#include "stdafx.h"#include 
     
      #include 
      
       #include 
       
        #include 
        
         #include 
         
          #include 
          
           using namespace std;int _tmain(int argc, _TCHAR* argv[]){ const int N = 6; string s1[N] = { "hell","cc","acc","bb","dd","kk"}; string s2[N] = { "ohell","ucc","yacc","nbb","mdd","ckk"}; set
           
             A(s1,s1+N); set
            
              B(s2,s2+N); ostream_iterator
             
               out(cout," "); cout<<"Set A:"; copy(A.begin(),A.end(),out); cout<
              
                C; cout<<"Set C:\n"; set_union(A.begin(),A.end(),B.begin(),B.end(),insert_iterator
               
                
                 >(C,C.begin())); copy(C.begin(),C.end(),out); string s3("grungy"); C.insert(s3); cout<<"Set C after insert s3:\n"; copy(C.begin(),C.end(),out); cout<

// TimerTest.cpp : Using STL functions //#include "stdafx.h"#include 
      
       #include 
       
        #include 
        #include 
         
          using namespace std;typedef int KeyType;typedef pair
          
            Pair;typedef multimap
           
             MapCode;/**程序入口简单 multimap 应用。*/int _tmain(int argc, _TCHAR* argv[]){ MapCode codes; codes.insert(Pair(415,"San Francison")); codes.insert(Pair(510,"kingdom_0")); codes.insert(Pair(521,"lynn")); codes.insert(Pair(521,"forever love.")); codes.insert(Pair(415,"hehe.")); cout<<"Number of cities with the area code 415:" <
            
             <
             
              first<<"Value:"<
              
               second<
               
                 range=codes.equal_range(521); cout<<"Cities with area code 521:\n"; for(it = range.first; it != range.second; it++) cout<<(*it).second<

// TimerTest.cpp : Using STL functions // 函数符#include "stdafx.h"#include 
      
       #include 
       
        #include 
        
         #include 
         
          #include 
          
           using namespace std;template
           
             //functor class defines operator()class TooBig{private: T cutoff;public: TooBig(const T &t):cutoff(t){} bool operator()(const T &v){ return v>cutoff;}};/**程序入口*/int _tmain(int argc, _TCHAR* argv[]){ TooBig
            
              f100(100);//limit = 100 list
             
               yedayada; list
              
                etcetera; int vals[10] = { 50, 100, 90, 180, 60, 210, 415, 88, 188, 201}; yedayada.insert(yedayada.begin(),vals,vals+10); etcetera.insert(etcetera.begin(),vals,vals+10); ostream_iterator
               
                 out(cout," "); cout<<"Original lists:\n"; copy(yedayada.begin(),yedayada.end(),out); cout<

(200)); copy(etcetera.begin(),etcetera.end(),out); cout<

// TimerTest.cpp : Using STL functions //   transform demo#include "stdafx.h"#include 
      
       #include 
       
        #include 
        
         #include 
         
          #include 
          
           #include 
           
            using namespace std;/**程序入口*/void Show(double);const int LIM = 5;int _tmain(int argc, _TCHAR* argv[]){ double arr1[LIM] = { 36, 39, 42, 45, 48}; double arr2[LIM] = { 25, 27, 29, 31, 33}; vector
            
              gr8(arr1,arr1+LIM); vector
             
               m8(arr2,arr2+LIM); cout.setf(ios_base::fixed); cout.precision(1); cout<<"gr8: \t"; for_each(gr8.begin(),gr8.end(),Show); cout<
              
                sum(LIM); transform(gr8.begin(),gr8.end(),m8.begin(),sum.begin(),plus
               
                ()); cout<<"sum: \t"; for_each(sum.begin(),sum.end(),Show); cout<
                
                  prod(LIM); transform(gr8.begin(),gr8.end(),prod.begin(),bind1st(multiplies
                 
                  (),2.5)); cout<<"prod: \t"; for_each(prod.begin(),prod.end(),Show); cout<